The Paradise Hobby Channel does an initial review and test of the B&T/Lambda Defense GHM9 Gen2 GBB SMG. After an unboxing, they do evaluate the firearm's performance, focusing on its impressive feel and action, whilst critically examining its shooting accuracy to determine if it meets the standards expected by enthusiasts and airsoft players.

OPS-Store features the GHM9 Gen2 gas blowback SMG from Lambda Airsoft. This is a compact, modular, and officially licensed B&T replica designed for CQB and Ultra CQB players. It boasts robust construction with a polymer upper and reinforced nylon lower, features a modular design with 20mm RIS and M-LOK rails, and is compatible with MP9 KSC/KWA or dedicated 38BB magazines.

Explosive Enterprises finally gets to lay his hands on the Lambda Airsoft GHM9. Lambda Defence has produced a replica of the B&T GHM-9 sub-machine gun utilizing aluminium, steel, and nylon components. The replica is designed to mimic the modularity of the real firearm, allowing for interchangeability of various parts such as grips, handguards, and magazines. It accepts standard and high-capacity G17 magazines from multiple manufacturers.

Melissa Seymour reviews the B&T GHM9 which is getting some love from PCC owners... "Is the B&T GHM9 the most versatile pistol caliber carbine on the market? In this video, I put it to the test and break down everything you need to know—from its modularity and handling to its reliability and overall performance. Whether you're considering it for competition, home defense, or range fun, I’ll show you how it stacks up."